A hidden braking assembly provides a connecting unit disposed inside a main frame. The connecting unit comprises an upper stem connected to a brake handle, a lower stem connected to a brake unit, and an adjusting set fixed to the lower stem and penetrated by the upper stem. A locking part of the adjusting set is operated to quickly adjust a telescoping length of an upper and a lower frame of the main frame. The connecting unit is synchronically adjusted during the adjustment of the upper frame and the lower frame. After the adjustment, the locking part is fixed to a body part of the adjusting set so that the two frames and the two stems can be firmly positioned, thereby facilitating a rapid adjustment of the telescoping length of the main frame and the connecting unit, increasing a using convenience, and attaining a stable braking effect.
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1. A hidden braking assembly comprising a brake handle, a brake unit controlling a stop of a wheel set, and a connecting unit which connects said brake handle and said brake unit; said connecting unit being installed inside a main frame, said main frame being made of an upper frame and a lower frame telescoping with each other;
wherein, said connecting unit comprising an upper stem connected to said brake handle, a lower stem connected to said brake unit, and an adjusting set respectively connected to said upper stem and said lower stem; said upper frame having a plurality of spaced-apart apertures defined thereon; said adjusting set including a body part fixed to said lower frame, a locking part pivotally disposed on said body part for being inserted into said apertures, and a junction part propelled by said locking part and disposed to connect said upper stem and said lower stem; said junction part including a seat member fixed to said lower stem and penetrated by said upper stem, a supporting member disposed on said seat member for engaging with said upper stem, and at least one elastic member disposed between said seat member and said supporting member; a fixing portion being formed on said upper stem and disposed to face said supporting member, and a fitting portion being formed on said supporting member and disposed to face and engage with said fixing portion, said fitting portion having a plurality of teeth disposed thereon; said locking part being inserted into said apertures for propelling said supporting member, whereby said fitting portion engages with said fixing portion firmly for connecting and positioning said upper stem and said lower stem of said connecting unit and said upper frame and said lower frame of said main frame.
2. The assembly according to
3. The assembly according to in
4. The assembly according to in
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1. Field of the Invention
The present invention relates to a brake device, particular to a hidden braking assembly disposed inside the frame.
2. Description of the Related Art
Referring to
When the upper frame 21 and the lower frame 22 are telescopically adjusted, the lower stem 132 slides over the junction part 133 directly, and concurrently the upper stem 131 moves to an adequate place along with the frames 21, 22. Referring to
Further, the user has to grip the brake handle 11 continuously to ensure that the braking effect of the brake member 12 functions. When the user releases the brake handle 11, the brake member 12 loses the braking effect, namely the hidden braking device 1 cannot attain a brake-locking status without the user's operation.
The object of the present invention is to provide a hidden braking assembly rapidly and firmly completing an adjustment of the length of the main frame, increasing a using convenience and attaining a stable braking effect.
The hidden braking assembly in accordance with the present invention mainly comprises a brake handle, a brake unit controlling a stop of a wheel set, and a connecting unit connecting the brake handle and the brake unit. The connecting unit is disposed inside a main frame. The connecting unit comprises an upper stem connected to the brake handle, a lower stem connected to the brake unit, and an adjusting set fixed to the lower stem and penetrated by the upper stem. The adjusting set includes a body part fixed to the lower frame, a locking part pivotally disposed on the body part for being inserted into spaced-apart apertures of the upper frame, and a junction part propelled by the locking part and disposed to connect the upper stem and the lower stem. Accordingly, by the concatenation of the adjusting set, the locking part is directly operated to quickly adjust a telescoping length of the upper frame and the lower frame while adjusting the main frame telescopically. The upper stem and the lower stem can be synchronically adjusted during the adjustment of the upper frame and the lower frame. After an adjustment, the locking part is fixed to the body part so that the upper frame and the lower frame of the main frame and the upper stem and the lower stem of the connecting unit are firmly positioned by the locking part. Therefore, the present invention quickly finishes a telescopic adjustment of the length of the main frame and the connecting unit, increases a using convenience, and allows the lower stem to activate the brake unit to attain a smooth and stable braking effect.
The junction part as aforementioned includes a seat member fixed to the lower stem and penetrated by the upper stem, a supporting member disposed on the seat member for engaging with the upper stem, and an elastic member disposed between the seat member and the supporting member. A fixing portion is formed on the upper stem and disposed to face the supporting member, and a fitting portion is formed on the supporting member and disposed to face and engage with the fixing portion. The fitting portion has a plurality of teeth disposed thereon. The locking part is inserted into any of the apertures of the upper frame for propelling the supporting member, whereby the fitting portion engages with the fixing portion firmly for positioning the aforementioned stems and the frames.
Preferably, a rolling ball is pivotally disposed on the locking part and disposed to face the supporting member.
Preferably, the supporting member includes a slot formed opposite to the upper stem and a second supporting member disposed on the slot. The fitting portion is disposed on the second supporting member, and a spring is disposed between the second supporting member and the slot.
Preferably, a brake fixing device is disposed between the upper stem and the brake handle. The brake fixing device comprises a housing fixed to the upper frame, a sliding part disposed inside the upper frame for allowing the upper stem to be disposed thereon, a retrieving part disposed between the sliding part and the housing, an activating part pivotally disposed on the housing and driven by the brake handle, and a connecting part respectively connected to the sliding part and the activating part. A wing is extended outward from the activating part, and a protrusion is extended at one end of the brake handle so that the protrusion is able to propel the wing.
The advantages of the present invention over the known prior arts are more apparent to those of ordinary skilled in the art upon reading following descriptions in junction with the drawings.
Before describing in greater detail, it should note that the like elements are denoted by the same reference numerals throughout the disclosure.
Referring to
Referring to
Continuing with the aforesaid, the junction part 53 includes a seat member 531 fixed to the lower stem 332 and penetrated by the upper stem 331, a supporting member 532 disposed on the seat member 531 for engaging with the upper stem 331, and at least one elastic member 533 disposed between the seat member 531 and the supporting member 532. A fitting portion 5321 is formed on the supporting member 532 and disposed to face and engage with the fixing portion 3311. The shape of the fitting portion 5321 fits in that of the fixing portion 3311, for example, a plurality of teeth are formed on the fitting portion 5321 for fitting in the tooth-like fixing portion 3311. Further, two elastic members 533 are adopted in the preferred embodiment. When the locking part 52 is inserted into the aperture 412, the rolling ball 521 propels the supporting member 532 as illustrated.
Referring to
Referring to
Referring to
If the user wishes to liberate the brake-locking status of the brake unit 32, this is achieved by pulling the brake handle 31 upward to separate the protrusion 311 from the wing 641. Therefore, the connecting unit 33, the connecting part 65, the sliding part 62, the brake handle 31, and the brake unit 32 can return to the non-braking status as shown in
To sum up, the present invention takes advantage of the adjusting set which operates a locking part of the adjusting set to rapidly adjust the telescoping length between the upper frame and the lower frame of the main frame and concurrently adjust the connecting unit during the adjustment of the above frames. After the adjustment is done, the locking part is fixed to the body part of the adjusting set to attain a stable position of the upper frame and the lower frame of the main frame and the upper stem and the lower stem of the connecting unit, thereby completing a telescopic adjustment of the length of the main frame and the connecting unit and facilitating a stable braking effect. A brake fixing device can be preferably applied to activate the brake unit in a braking status or a brake-locking status, whereby the subject hidden braking assembly attains an easy and convenient operation and use.
While the embodiments in accordance with the present invention are shown and described, it is understood that further variations and modifications may be made without departing from the scope of the invention.
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Sep 12 2013 | Ching-Tsang, Wu | (assignment on the face of the patent) | / |
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